<header>
  
[LOGO]
  <div id="navi" onmouseout="outOfNavigation(event, this)" onmouseover="notOutOfNavigation(event, this)">
    <div id="upper">
      <ul>
[NAV_TITLES]
      </ul>
    </div>
    <div id="lower">
[NAV_LINKS]
    </div>
  
  </div>
  
</header>